The G13 coolant
The G13 coolant, together with the G12 evo, is the latest standard of VW coolants. The exact spare part number from VW for this coolant is TL-774 J. It is used, for example, for all Golf 7 (VII) models from the factory.
As a direct successor to the G12, G12+ and G12++ coolants, the G13 coolant is miscible with the G12 coolants (see paragraph below). The special feature of G13 coolant is that it is glycerine-based and therefore more environmentally friendly than the previous G12 coolants. At the same time, its production is cheaper than its predecessors. The successor to the G13, the G12evo, is similar. These two coolants can also be mixed with each other.
Advantages over the G12
The advantage of the G13 coolant standard is that it is more environmentally friendly and less expensive to manufacture. In terms of performance, the G13 follows on from the properties of the G12++. In the manufacture of a G12++, glycol was used as the base. The G13 uses glycerine, a biological waste product, as its base. This means that production is not only more environmentally friendly, but also saves costs during manufacture.
G13 ready mix and concentrate
As with all other coolants, G13 coolant is also available as a ready mix or concentrate. In the case of the concentrate, you must mix it with a distilled water before filling it into the cooling system. The G13 ready-mix is an optimal solution for refilling. As the term ready mix implies, the concentrate has already been mixed with water and can be used directly for refilling.
Mix G13 coolant
The G13 coolant can be mixed with all other VW standards, except for the G11 coolant. This is also shown briefly and compactly in the tabular overview.
Original VW vs. alternatives
If you are looking for an original VW G13 coolant, you will have a hard time. Since 2018, VW only produces the latest standard, the VW G12evo. You can buy this buy next to workshops, at gas stations or on the Internet. If you still want to buy a G13 coolant, there are alternative manufacturers to choose from, which continue to produce G13 coolant. If these comply with the VW G13 release, the TL-774 J, they are approved by VW for the respective cars.